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以焦脱镁叶绿酸-a甲酯为起始原料,在碱性条件下对其实施空气氧化反应,分离出一系列在外接E-环和12-位甲基上的氧化和重排产物,氯代焦脱镁叶绿酸-a甲酯的相同反应也经历了类似的反应历程.132-位和12-位氧化产物的进一步空气氧化给出两种不同的反应结果,前者反应迅速且产物复杂,而后者则基本不发生反应.首次报道的二氢卟吩衍生物均经UV,IR,1H NMR及元素分析确定其化学结构,对相应的化学反应也提出了可能的反应机理.
To pyropheophorbide-a methyl ester as a starting material, under alkaline conditions for its air oxidation reaction, isolated a series of external E-ring and 12-methyl oxidation and rearrangement products The same reaction of methyl chloropheophorbide-a chloromethyl also underwent a similar reaction.Further air oxidation of the 132- and 12-position oxidation products gave two different reaction results, the former reacting rapidly and The products were complex, while the latter did not react.The first reported chlorin derivatives were confirmed by UV, IR, 1H NMR and elemental analysis, and the possible reaction mechanism was proposed for the corresponding chemical reactions.